Like all of Fieldpiece's test instruments, the SRL2 Infrared Refrigerant Leak Detector is designed exclusively to make the HVACR Technician's job easier, faster, safer and more efficient. We set out to develop the best refrigerant leak detector for HVACR. We believe the SRL2 is it. And now it comes in kit form in a rugged, blow-mold case with all of the extras (see What's Included?).

The ergonomic design fits naturally in your hand. The ruggedized construction stands up to abuse most other leak detectors can't handle. The eight-hour battery life lets you work all day before recharging and the included vehicle and wall chargers help you during overtime. The mute and peak functions allow you to work the way you want to work. The magnetic hanger helps keep the detector out of the way when repairing a leak, but visible enough so you won't leave it on the job.

The SRL2 uses infrared optics to create a portable refrigerant leak detector technology that has a superior combination of sensitivity, speed, sensor life, battery life, portability, and ease of use.

Gas is pumped through the tip of the wand into the sensor within the SRL2 body. The sensor detects changes in concentration, not absolute concentration, making it easy to detect leaks even in areas with refrigerant in the air.

The SRL2 detects leaks as small as 0.1 oz/year, which exceeds the toughest SAE J1627 standards. The SRL2 comes with wall and car charger for its ultra-compact Li-ion polymer battery which powers the SRL2 for 8hrs of continuous operation before a recharge is needed. That’s long enough to last your entire workday.

Unlike many leak detectors, oil vapor does not trigger the SRL2.

The SRL2 has variable sensitivity settings, keeping ‘nuisance tripping’ to a minimum. A quick and automatic 30 second self-calibration upon power-up ensures optimal performance. A built in replaceable filter blocks moisture and harmful particulates. The SRL2 also has a mute button and a peak hold function.

How Does it Work?
The SRL2 triggers on a change in refrigerant levels as refrigerant passes by the sensor. Infrared (or IR) sensors work on the principle that refrigerants reflect a certain spectrum of light that is “below red” or infrared. When refrigerant is drawn into the sensor, it travels between a light/heat source and a sensor that is constantly receiving a “picture” of that light.

Like a cloud that reflects solar radiation and “blocks” out the sun, the refrigerant reflects the infrared radiation and blocks the sensor from receiving the complete picture. The result is a trigger. However, after the “picture” stays the same for a while, the sensor no longer senses a change and the triggering stops. This is important.

IR sensors act almost exactly like the motion sensors that trigger your neighbor’s blinding garage lights outside. The outside sensors are taking a picture of a designated area. When someone walks into that picture a change is detected. The light turns on. If you stand in the same place without moving, eventually the light turns off until you move again.

Because of this unique sensor, IR detectors that sense change are used differently from the more commonly used heated element detectors. You have to use a double-pass or sweeping motion to pinpoint a leak, meaning, you pass by a refrigerant “stream” it blocks out light to the sensor and triggers. Then you sweep back, and it triggers again. The midpoint is the source of the leak. (See the SRL2 Quick Start Guide for examples.)

Competitive Advantages.
Simply put, the SRL2 detects all refrigerants the same way, meaning it triggers on R-507 the same way it does on R-22 the same way it does on R-410A. If the refrigerant used in the system is in the refrigerant IR spectrum, the detector is going to find it. Technicians tell us it is the best leak detector for HVACR on the market because it picks up “everything” and it has all of the features they want and need.

Why Infrared Technology?
Infrared sensors by far are the longest-lasting leak detection sensors on the HVACR market today. We've improved the technology so that, with normal use, your SRL2 Infrared Refrigerant Leak Detector should last for the life of the instrument (UP TO 10 YEARS in testing.)

Advantages Over Other Types of Refrigerant Leak Detectors:

Triggers on all CFCs, HFCs, HCFCs and blends.

Sealed sensor. Unlike heated diode and corona discharge leak detectors, the sensor doesn't "touch" refrigerant as it passes through the instrument. Heated diode and corona discharge units tend to degrade or fail when they come in contact with high concentrations of refrigerant or touch liquid.

Doesn't trigger on oil or moisture like other types of detectors.

Senses change in refrigerant levels. Works even in contaminated environments.

Up and running in less than 30 seconds. Some heated elements and corona discharge units take much longer to warm up. UV dyes can take several hours to travel through a running system and can degrade system components.

The SRL2 now comes standard in kit form (model SRL2K7) in a rugged, blow-molded case. Included with every SRL2K7 Advanced Infrared Refrigerant Leak Detector kit are vehicle and wall charging units. Five (5) O-rings and 10 replacement filters are located in the interior of the case handle. The RFE2 9-inch Flex-Probe Extension and RRE2 Rigid Extension Probe offer you that extra reach you need out in the field and makes the searching for leaks along the evaporator coil easier. There included in the left side of the case. Operators manual, quick start operation guide in a pocket on the left side of the case. Rechargeable battery also included. When ordering, make sure your counter professional uses model number SRL2K7.

Accessories and Replacement Parts
The ABMK3, shown with the SRL2 (not included) inside, is available to technicians who purchased the SRL2 Infrared Refrigerant Leak Detector when it originally came with the ANC7 soft-sided case. The ABMK3 upgrades your refrigerant leak detector to include everything in the SRL2K7. The RFE2 and RRE2 extension probes come right in the case. See your distributor for pricing on the AMBK3.

Don't need the hard case? The RFE2 9-inch Flex-Probe Extension offers the extra reach you sometimes need out in the field with a sturdy wand that holds the shape you choose. The RRE2 Rigid Extension Probe makes the searching along the coils easier. Use them alone or connect both in-line for an even greater reach.

The RFL2 Replacement Filter Pack includes five (5) O-rings and 10 replacement filters.

Biggest piece of junk I ever purchased

I have used this on several calls only to never have it detect anything yet. The worst example that made my final determination it is junk was when I went on a call which was 10 pounds low on R-22. I tested carefully, making sure now to move too slowly as per the instructions. Never indicated a leak. I visually found oil saturated insulation on the suction line and it still would never indicate a leak until I finally put the end of the tester in the insulation and literally wrap the oil saturated insulation around it. Pretty bad when you can visually find the leak and your tester doesn't.